Greeley's "My Favorite Bands" festival has been happening, and getting bigger every year, since 2009. Hairball to Headline the 2026 'My Favorite Band' Festival in GreeleyHairball is an amazing Arena Rock tribute band out of Minnesota. Who Puts on the 'My Favorite Bands' Tribute Band Festival in Greeley? Gates open at 2:00 p.m. with the bands beginning at 3:00 p.m.3:00 - Rumours (Fleetwood Mac Tribute) - 9th Street Plaza. 4:00 - Double Life (The Cars Tribute) - Inside Moxi Theater.